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Production of Cycloalkanes in Hydrodeoxygenation of Isoeugenol Over Pt‐ and Ir‐Modified Bifunctional Catalysts
Author(s) -
Bomont Louis,
AldaOnggar Moldir,
Fedorov Vyacheslav,
Aho Atte,
Peltonen Janne,
Eränen Kari,
Peurla Markus,
Kumar Narendra,
Wärnå Johan,
Russo Vincenzo,
MäkiArvela Päivi,
Grénman Henrik,
Lindblad Marina,
Murzin Dmitry Yu.
Publication year - 2018
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201800391
Subject(s) - hydrodeoxygenation , chemistry , isoeugenol , bifunctional , catalysis , deoxygenation , bifunctional catalyst , mesoporous material , inorganic chemistry , selectivity , organic chemistry , nuclear chemistry , eugenol
Hydrodeoxygenation of isoeugenol was investigated at 200 °C under 3 MPa total pressure in dodecane as a solvent, in hydrogen, over bifunctional Pt‐ and Ir‐modified Beta zeolites and mesoporous materials. As a comparison, Pt and Ir supported on Al 2 O 3 , SiO 2 and mesoporous MCM‐41 were also tested. The catalysts were characterized by XRD, CO pulse chemisorption, transmission electron microscopy, scanning electron microscopy, nitrogen adsorption and FTIR pyridine adsorption desorption. The results revealed that the most active and selective catalyst was Pt‐H‐Beta‐300, which exhibits the lowest acidity and largest crystal size of Beta zeolite among the studied Pt‐ and Ir‐modified Beta zeolites. Complete conversion of isoeugenol and 89 % selectivity to propylcyclohexane was obtained with this catalyst in 240 min. The overall deoxygenation selectivity was 100 %, giving dialkylated cyclohexanes as the second major product. The catalyst was regenerated, reduced and reused in the hydrodeoxygenation of isoeugenol with almost the same performance as the fresh catalyst. Thermodynamic analyses and kinetic modelling of the data were also performed.